High-capacity friction-gear.



J. F. O'CONNOR.

Patented Apr. 15,1919.

' INVENTOR. JaMFfl filzrwr BY W .11 7M ATTORNEY g V @m/ 7/ HIGH CAPACITYFRICTION GEAR. APPLICATION FILED MAR. 23. 1911.

' I ITNESSES:

UN TED S TES PATEN OFFICE JOHN F. o oomvon, or cnrcneqnlmivors, Assrenon'ro WILLIAM MINE or GHAZY,

' vEwYonK HIGH-CAPACITY FRICTION-GEAR.

To all whom it may-concern:

Be it known that I, JOHN F. a citizen of the United States, 'residin atChicago, in the county of Cook and tate of Illinois, have invented. acertain new and OCoNNoR,

' useful Improvement in High-Capacity Friction-Gears, of which thefollowing is a full, clear, concise, and exact description, referencebeing had to the accompanying drawings, forming a part of thisspecificatlon.

. This'invention relates to improvements'in high capacity frictiongears.

The object of the invention is to provlde a high capacity friction gearwherein is employed an expanding constant-angle wedge.

In the drawing forming a part of this specification, Figure 1 is alongitudinal vertical section and part side elevation of a draft riggingshowing my improvements in connection therewith. Fig. 2 is a front endview of the gear proper, upon an enlarged scale. Fig. 3 is a verticaltransverse sectional view taken upon the line 33 of Fig. 1, and Fig. 4is an end elevation of one of the volute cams employed in myarrangement.

In the drawing, 10-10 denote front and rear followers of a draft riggingcooperable V ting member 16, and elements 1717 in the form of volutecams interposed between the pressure-transmitting member and the wedgemembers. To reslst the movement of the friction shoes, a two-coil spring18 is.

employed and to hold the parts in assembled relation, a connecting bolt19 is used, the same extending through the pressure-transmitting member,between the shoes, and through a suitable perforation in a boss at therear end of the member A.

In Fig. 4 one of the elements '17 is shown in end elevation and as thereshown, the main outer surface 20 thereof is in the form of a volute camwith the point 21 as the generating center. Each of the members 17 iselongated, as clearly shown in Fig. 3, to give Specification of LettersPatent.

Patented Apr. 15, 1919- Application filed l larch 23, 1917. Serial No.156,915.

the elfect of a roller and thus provide an elongated bearingcontact'between the pressure-transmitting member and each of the Wedgemembers. Furthermore, the pressure-transmitting member 16 is providedwith an overhanging shoulder 22 on eachof its faces to engage the edge23 of each corresponding element 17 so that, as thepressure-transmitting member 16 is forced inwardly relatively to thefriction shell under either buff or draft, the cam. elements 17 wi'll berotated due to the engagement of the shoulders 22 withthe edges 23.Hence, as the cam elements are thus rotated, it is apparent that thedistance between the pressure-transmitting member and the wedge memberswill be increased dependent upon the amount of rotation of the camelements. In this manner, I obtain a wedge which is expansible and atthe same time maintain a a constant angle between the wedge and thefriction shoes. Furthermore, by employing the volute cams, as abovedescribed, the pressure-transmitting member will readily release uponremoval of the pressure under either buff or draft. I

Although I have herein shown and described what I'now consider theimproved embodiment of the invention, the same is merely illustrativeand I contemplate all changes and modifications that come withln thescope of the claims appended hereto.

I claim 1. In a friction shock absorbing mechanism, the combination witha friction shell, friction shoes cooperable therewith, and a spring, ofa pressure-transmitting member, wedge members interposed between thepressure-transmitting member and each of the friction shoes, andelements interposed between the pressure-transmitting member and each ofthe wedge members, said elements being of roller form and having volutecam surfaces.

2. In a friction shock absorbing mechanism, the combination with afriction shell, friction shoes cooperable therewith, and aspring, of apressure-transmitting member having a plurality of faces correspondingto the number of friction shoes, each of said faces being recessed andprovided with a shoulder, and elements in the form of volute camslocated within said recesses and adapted to be engaged bythecorresponding shoulders to thereby insure rotation of said elememe uponactuation of thev ingmeohanism.

sure-transmitting member and the friction shoes, sald'pressuretI'LIlSHllttl-Ilg me ber and wedger-members being all providedWith correspondingrec'e's'se's and the pressure- 7 transmitting nie'mbeiWith shoulders adjacent th'e recesses' therein, and elements interposedbetween the pressure-transmitting member and'th'e Wedge member anddisposed in said recesses, said elements being in the. 7 form of Whitece'ms adapted to'be rotated v m; I

e-fri ction 7 shoes; cooperable therewith, and a flsprihfdf 21 constantangle expansible edge cooperztble with said shoes, said edge com- 7 =bythe pressure-transmitting member upon 4 actuation of the shock absorbingmechanism. 7 '3. "In a, friction" shock absorbing means nism, thecombination With a friction shell, friction :shoes oooperable therewith,and, a spring, of a pressure-transmitting member havinga plurality offeces correspondingto V the'num'ber of friction shoes, a plurality ofWedge members interposed between'the pres- In a 'fridtio'l'i *shockiibsoifbiirg mechix the. combination With a frictionshelhf prisin'g acentral pressure-transmittingmember, a" plurality of auxiliary membersdis-' posed around the pressure-transnnttmg member and engaging theshoegend a plii'a 30 rali'ty ofrolli-ng'canis interposed between thepressure transmittingmemberFandfheaiuxih ia'rymembers." I o V InWitnessthnt I claim the :foreg'oin I have hereunto snbscribednny namethis day fMarch,191 Z. I r

1 O 4 0 00mm;

i V Copiesof this patient may be obtained 'forfivvcentseach,byladdi'essing the Gfo1iimissio1ief'd ZPteiits,'

1 Washingfiomh'fl.

